1. Application
In the past decade, the rise of copper price has accelerated the development of explosion aluminium clad copper plate, and the application fields of copper aluminum composites have also been gradually expanded. The main common fields are heat conduction and heat dissipation, communication, electricity, etc.
2. Product description
The crystal structures of copper and aluminum are all face centered cubic with similar atomic spacing（ α Ｃｕ＝０．２５５６ｎｍ， α Al=0.2862nm) It is calculated that the bond energy of Cu Cu bond is similar to that of Al Al bond, so it is easy to form a diffusion layer on both sides of copper and aluminum in a short time [6]. The large reduction rate causes the material to deform instantaneously. Due to the difference of copper and aluminum deformation rates, a large amount of deformation will affect the material.
The structure and properties of the material have a great impact, so the material is rolled with 6mm (rolling reduction rate is 14.3%) and 2.2mm (rolling reduction rate is 68.3%) reduction.
3. Product Features
At present, driven by many factors such as functional requirements, energy conservation and environmental protection, the development of composite materials is in the ascendant, and its preparation methods are also constantly innovating. This innovation is not only reflected in the application of new scientific and technological means, but also in the integration and improvement of traditional methods in material composition. As an important traditional method, rolling cladding has mature production lines and equipment that can be directly applied to production. The bonding interface of rolled products is also relatively solid and reliable. Many products, such as stainless steel/carbon steel clad plate, have been industrialized, and there is a large social demand. Compared with other composite methods, it has obvious cost advantages. At present, there has been considerable research on rolling cladding, but there are still many unclear places. By combining with advanced computer simulation technology, model simulation and theoretical numerical analysis of rolling mechanism are carried out to obtain a deeper and comprehensive understanding, which is of great significance for promoting the improvement of rolling technology and further application in the field of metal material composite.
4. FAQ
Explosion aluminium clad copper plate joint materials are widely used in the electrical industry, with a wide variety, including transformer copper aluminum transition device joints, copper aluminum equipment clamps, reactors, and transformer connecting bars. At present, friction welding, diffusion welding, flash welding, explosive welding, and other processes are mainly used for copper aluminum composite joints. With the development of photovoltaic power generation and wind power generation, in order to ensure the stability of power supply in power plants, when using transformers, reactors and other equipment, the reliability of copper aluminum transition joints is required to be higher and higher. The traditional process has its own joint brittleness problem, which cannot meet the market demand. There is no joint brittleness problem for copper aluminum composite plates and transition joints, The hidden trouble of transition joint quality is fundamentally solved, and its application space is greatly expanded.
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